Hello,

I would like to put this problem together, in case someone has had the answer for all these years.

Good luck with containment, wherever you are.

Hi Carlos !!
Thank you very much for your answer and your analyse. It will help me a lot !

This component is actually part of a system that already contains oil and pressure. I could not share this model for privacy reasons.

Nevertheless, I have a question. WHAT do you mean "extend a component"? I am a beginner on model and I have to learn everything by myself .. Not easy !!

Thank you again for the work done, I will get back to it right away.

Yes of course !! Here it is :

model Clapet_Anti_Chute_Debit_OK
  OpenHydraulics.Interfaces.FluidPort IN
    annotation (Placement(transformation(extent={{-112,20},{-92,40}}), iconTransformation(extent={{-112,20},{-92,40}})));
  OpenHydraulics.Interfaces.FluidPort OUT(m_flow(start=20))
    annotation (Placement(transformation(extent={{208,20},{228,40}}), iconTransformation(extent={{208,20},{228,40}})));

  parameter Real Tarage = 60
  "Tarage du clapet (L/min)" annotation (Dialog(tab="Sizing"));

    // Si la pression détectée en entrée est inférieure à la valeur du tarage, alors cela veut dire que le fluide peut passer
    // A contrario, si la pression détectée est inférieure à la valeur du tarage, alors le fluide doit être bloqué

  OpenHydraulics_mod.Components.Sensors.FlowSensor flowSensor annotation (Placement(transformation(extent={{-26,24},
            {-6,44}})));
  Modelica.Blocks.Sources.RealExpression realExpression(y=if ((Tarage*(1/60000))
         < (flowSensor.y)) then 0 else 1)
    annotation (Placement(transformation(extent={{-52,-22},{56,-2}})));
  OpenHydraulics.Basic.VariableRestriction variableRestriction
    annotation (Placement(transformation(extent={{82,24},{62,44}})));
equation
  connect(realExpression.y, variableRestriction.control) annotation (Line(
        points={{61.4,-12},{72,-12},{72,26}},         color={0,0,127}));
  connect(variableRestriction.port_b, flowSensor.port_b)
    annotation (Line(points={{62,34},{-6,34}}, color={255,0,0}));
  connect(IN, flowSensor.port_a) annotation (Line(points={{-102,30},{-64,30},{-64,
          34},{-26,34}}, color={255,0,0}));
  connect(variableRestriction.port_a, OUT) annotation (Line(points={{82,34},{148,
          34},{148,30},{218,30}}, color={255,0,0}));
  annotation (
    Icon(coordinateSystem(preserveAspectRatio=false, extent={{-100,-100},{220,
            160}}), graphics={
        Line(points={{-92,30},{-20,30},{-2,30}}, color={0,0,0}),
        Ellipse(extent={{-2,52},{44,6}}, lineColor={0,0,0}),
        Line(points={{44,30},{60,50},{60,10},{78,50},{78,8},{96,50},{96,10},{118,50}}, color={0,0,0}),
        Line(points={{98,70},{138,30}}, color={0,0,0}),
        Line(points={{138,30},{98,-10}}, color={0,0,0}),
        Line(points={{138,30},{216,30}}, color={0,0,0}),
        Text(
          extent={{-134,74},{-68,38}},
          lineColor={0,0,0},
          lineThickness=0.5,
          textString="IN"),
        Text(
          extent={{186,78},{252,42}},
          lineColor={0,0,0},
          lineThickness=0.5,
          textString="OUT")}),
    Diagram(coordinateSystem(preserveAspectRatio=false, extent={{-100,-100},{
            220,160}}), graphics={Text(
          extent={{-92,156},{210,114}},
          lineColor={28,108,200},
          textString="CLAPET ANTI-CHUTE
Je recherche ici a utiliser le VariableFlow comme un Go/No Go
Si le flux mesuré auflowSensor est inférieur à la valeur du tarage du clapet, le flux passe librement.
Si le flux mesuré au flowSensor est supérieur à la valeur du tarage du clapet, le flux est bloqué."),
                                                                                     Text(
          extent={{-58,-24},{212,-98}},
          lineColor={238,46,47},
          textStyle={TextStyle.Bold},
          textString="if ((Tarage*(1/60000)) < (flowSensor.y)) then 0 else 1")}),
    uses(OpenHydraulics(version="1.0"),
      OpenHydraulics_mod(version="1.0"),
      Modelica(version="3.2.2")));
end Clapet_Anti_Chute_Debit_OK;

Unfortunately I can't, I can't download anything from my work computer (security).
Doesn't my problem mean anything to you? The component seems so simple to model ...

Good morning all !
The objective of my modeling is to model an anti-fall valve which, when it has a too high input flow (adjustable), closes.

So here is what I modeled :

So I put two ports (one input and one output). In between, a FlowSensor followed by a Variable Restriction. As a signal of this restriction, I put the following equation:

if ((Tarage*(1/60000)) < (flowSensor.y)) then 0 else 1